Improved railway-frog



.@tttteh gisten gettati @fitta Letters .Patent 'Na 73,959dated February 4,1868.

turnover RAILWAY-race.

tlgt tlg'ttul attratta in ttm heiten prima uit mttitgprrt nt its una.

TO ALL WHOM- IT MAY CONCERN Be it known that we, J. HAILL DOW and DANIEL J. BIKER, of Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Railroad-Frogs; and we do declare that the following is a full, clear, v

and exact description of the same, reference beiug'had to the accompanying drawings, making a part ofths specification, in whichy Figure 1 is a side view, with a part of B cut away to show the chair C, the greater part of the wing-e also being cut away.

Figure 2 is a top View.

Figure 3 is a top view of the chair C, resting on the plate Figure 4 is a side view ofthe point g, also showing the end.

Figure 5 is a top view of the point g.

Like letters refer to the same parts in all the gures.

In railroad-frogs now in use the wings and point, when worn upon the upper side, have to be replaced by 'new ones, at considerable expense. The object of our invention is to construct a railroad-frog in such a manner that, when the wings and point are worn upon one side, they can be reversed, presenting an unworn surface equal to the irst. We accomplish this object by making a point of peculiar form, which rests in a. chair, provided for the purpose, and by bevelling both edges of the wings.

To enable others skilled in the art to make and use our invention, we proceed to describe its construction and operation.

The'principal parts of the frog, except lthe wings and point, are constructed like those of the frog known as the Mansfield frog. l,The lower plate a is of boiler-plate, three-sixteenths'ot an inch thick, and of usual length and width. On this iron plate is'placed an oak plank, A., two inches thick. On this is an iron plate, onequarter of an inch thick. Both of these plates may be fastened to the plank by means of spikes,or in any other suitable manner. On the plate bis another plank, of oak, not quite as long nor quite as wide as the other. This plank is oneand three-quarters inch thick. On this plank is an iron plate, c, one-quarter of an inch thick, or thicker, if desired. The heel h is'ot' wrought iron', of the usual size. j

The point g, I construct in a peculiar manner, bevelling both the upper and lower edges, so that they are alike, as shown in tigs. l and 5. This point rests in and upon the chair' C, which has a recess,fz', at one end, to receive the larger end of the point g.' The other end of the chair is provided with a bevclled groove, to receive the smaller end of the pointy. The groove is of such size and form that the hevelled edges, r, of` the point touch thesides of the groove, and prevent the surface, s, of the point from hitting the bottom of the groove, so that, in use, no pressure can come upon the lower surface, s, oi' the point, and. this under surface cannot become bruised or abraded, there being alwaysa little space between this part of the point and the chair;.a'nd since the smaller end of the point does notrest upon the chair, the'upper and lower-surfaces of the point should be made slightly tapering, so that the upper surface, when in use, will be on-the same level as the rail. The chair is secured to the plate by means of bolts or spikes at lc, and elsewhere, as indicated. The plank B must'have an opening Iitting'the chair C. I

. The wings e andj' are constructed in the usual form, except that -I bevel both the upper and lower -inner edg es,instead of the upper one only, as is customary. The holes n, designed to 'receive the bolts, in the wings efand point 7L, may be countersunk on the under sides, as well as on the upper, when these parts are made, or' they can be made in the usual manner,.and can he countersunk when these parts are to be reversed, Hare openings for the rails, of the ordinary form.

The chair 'is madeof cas't iron.

The point h and wings e andfare made of steel; Theseveral parts of the frog are to be firmly fastened together, by means of bolts .or otherwise, in the usual manner. A

In use, when the wings .ej' and the point h are so'worn as to he unt for use, the bolts can be taken out, and these parts can be turned jover e, taking the place off, andf the place of e, presenting for Iuse unworn surfaces; and, in this way, these parts can he used twice as long asvwith the ordinary method of making frogs.

Since the point y is supported on the bevelled edges 4, and not on the surface s, it is ob'vious that, when reversed, the position of the upper surface will not he aiected by the first wear ofthe point,

The heel L may be made: in part or wholly of steel. i l

The bolts which are used for holding the other parts of the frog together may (a. pant of them) pass through the chair, and no separate bolts will be required to hold the chair in place.

Having thus fully described our invention, whatwe claim es new, and desire to secure by Letters Patent, is-

1. rEhe chair C, eonstructed substantially as und for the purpose specified.v

2. The point g, having its upper und lower edges bevelled, in combination with the chair C, 'constructed substantially as and for the purposes specifled.

3. The wings ef, when provided with two bevelled edges, in combination with thepoint g and chair C, all

. constructed and arranged substantially as and for the purposes specified.

i J. HALL DOW,

DANL. J. RIKER.

Witnesses:

WM. J. OAKEs, WM. B'. Kme. 

